I too have a copy of Bryan Beirne's book on thefamily O'Beirne. The book is fairly good andreflects a fair amount of research. My ancestor, Patrick O'Beirne, emigrated fromMohill, Co. Leitrim, in 1852, married in NYC, anddied in November 1861, then serving as a gunsmithin an armory in/near Central Park, Manhattan. I have also done quite a bit of research onJames Rowan O'Beirne, of Co. Roscommon, who was aBrevet Brigadier General in the Union Army in theAmerican Civil War, was a recipient of the USArmy's Medal of Honor for valor at the Battle ofFair Oaks, VA (May 31-June 1, 1862) and who ledthe April, 1865 manhunt for John Wilkes Booth,the assassin or President Abraham Lincoln. J.R.O'Beirne went on to many distinguished post-warcareers and died in February, 1917, in New YorkCity. His grave, unfortunately, remained unmarked until June 1, 1996, when the NYC Co.Roscommon Society and the Irish Brigade Assoc.erected a large monument to him in Mt. CalvaryCemetery, Queens, NYC, and held a commemorativeservice with over 250 people. Anyone with information on Patrick O'Beirne of Mohill, Leitrim, or who has or wants info on J.R.O'Beirne of Roscommon and NYC is welcome tocontact me online at Irish155NY@aol.com.Regards,Kevin O'BeirneBuffalo, New York